Expansion joint



May 29, 1928.

G. F. MURPHY EXPANSION JOINT Filed. Nov. 1924 2 Sheets-Sheet 1 INVENTOR5 g Wf' A TTORNEYS' May 29, 1928. 1,671,308

G. F. MURPHY EXPANSIION JOINT Filed Nov. 1924 2 Sheets-Sheet 2 IN VENTOR ATTORNEYS Patented May 29, 1928.

UITEDTSTANTES GEORGE E. MURPHY, 0F PHILADELPHIA, PENNSYLVANIA.

EXPANSION JOINT.

Application filed November 4., 19524.

This. invention relates to expansion joints suitable for use in steamand other pipe lines and has for one of its primary objects provision.of a guided expansion joint which, among other things, is adapted to beused iii-large lines such as. oil lines.

More specifically my invention contemplates a guided expansion jointwherein the stuffing box joint may be readily exposed for adjustment orrenewal.

A further advantage of the invention is to provide a guided expansionjoint, in which the working surfaces are effectively lubricated.

In general I propose a simple inexpensive construction of guided jointwhich is effective in operation.

Other and more detailed objects and advantages will appear 'from thefollowing description of the best form of my invention now known tome,which form is illustrated in the accompanying drawings, wherein Fig.1 is alongitudinal section thru a joint embodying my improvements.

Fig. 2 is a section taken from 22 of Fig. 3. i

Fig. 3 is a side elevation of the joint shown in Fig. 1' and Fig. 4 isan end elevation of dicating different positions of certain. of theparts. I 7

Referring now to the drawings, referthe line ence character A denotes acasing adapted.

to be secured at one end to a pipe section 7 of the line; and thereference character B denotes a tubular or-pipe section which istelescopic within the casing A and is provided at its free end with a.piston or head 8 adapted to be connected to another section of the line.The casing A is provided with an internal annulus 9 and is other-- wiseso constructed that such casing and the pipe section B cooperate toprovide a stufiing box joint which has a gland 10, the joint beingpacked with packing 1.1 of any desired character.

The casing A has a flange 12 at one end adapted to receive the studs 13by which the gland is adjustably secured to the casing. 7

By the arrangement shown the packing maybe compressed and the glandlocked in adjusted position.

I Cast integralwith the casing A and extending forwardly of the flange12 is a segmental guide foot or plate 14 which has Fig. 3, 1n-

Serial No. 747,713.

is adapted to fit over the flange 12 of the casing A when the doorsareinclosed p0si-. tion. The right hand rim is adapted to fit over anannular ringlike member 18 -integral with the guide plate 14:. Therimlike portions of the two doors are adapted to abut as indicated inFig. 2, when the doors are in closed position and the two doors arelocked in this position by means of the bolts 19 and nuts 20. .Thus withthe doors closed and the bolts 19 tightened,

the two doors seat firmly against each other and lock with the flange 12and with the ring 18,. and brace the guide plate 1 1-, the partscooperating to provide a rigid though composite structure guiding thepiston head 8. g Y

Intermediate their ends the doors are cut away to provide a slot 21extending longitudinally of the joint. By this arrangement I may mountan oil cup 22, or other suitable lubricating device, upon the piston,the oil working around the piston by means of a suitable oil groove 23,insuring lubrication of all sliding surfaces.

To expose the stufling jointand its parts, the bolts 19 are loosened,and the members 16 swung open to the position indicated in Fig. 4. Bymaking all bolt heads and nuts of the same size, the same tool may beused to open the doors and adjust the gland.

The guide plate 1 1 and the doors are provided with ribs whichcooperate, when the parts are in closed position, to providesubstantially annulanspaced flanges 24 and 25, limiting the extent ofmovement of the piston.

It will be observed that the guide plate 14 serves to support the partsin alignment when the inspection doors are opened for inspection oradjustment.

I claim:

1. In an expansion oint for pipe lines and the like, a casing, a pipetelescopic in the casing, n. peeked joint 'therehetween, and guide meansfor the pipe pivoted to swing to a position exposing the packing oint.

2. In an expansion ,joint for pipe lines end the like, acesingh pipetelescopic in the casing, a packed oint therebetvveen, end e pair ofpivoted guide members swingahle to expose the packing joint. i 3. In anexpansion oint for pipe lines and the like, a casing-yin pipetelescopicdn and the like, a. casing, (L pipe 'telescopicin theicasing,and provided with e piston-like hezuchend a sectional cyli'mlriealguide-means therefor, n section .ofsvhich is itigid with the casing forsupport and a section of which is movable to expose the joint.

'owIn enexpan'sion joi nt for pipe lines and? the like; a; casing, npipe telescopic in the: casing, and provided i with a piston-like head,e cylindrical guide Wineens therefor having a' longitudinsl opening, anda lubricant cup, csrried hy tlieupiston head and movable inseidwopening. 'GJIIl an expansion joint :for pipelines and the like, atcasing, e'pipe telescopie in the casing a peekedjoint thei'ebetwe'en,and guide means foi" the pipe comprising seg ments one or more of whichare pivoted,

7. In "21in expansion joint for pipe lines nindithe like, sensing, a'pipe telescopic in the casings packed joint therehetweenfzmd aucyl'indriciil gnideineans for the pipe provided With stops on the' insidethereof, I said guide means comprising; segmental sections one or moreOfWlilbll are pivoted.

8. Inznnexpension joint forpipe lines and the like, a cesingo ampipetelescopic in theeasingn packed joint tl161'Gb8l3WGI1,"flIlCl acylindrical guide means i for the pipe coniposed of segments, togetherwith means for supplying lubricant 1 between adjacent segments.

9. In. an expansion joint for pipe lines, a casings pipe telescopictherein, and a guide easing therefor including one or more removabledoors.

. l0.-In-an expansion joint for pipe lines,

a, casing, a pipe telescopic therein, and a. wg ui de "segment thereforincluding one or more removable doors, the casing endeeginenhheingintegral.

- 11.I n l'II-BXPMISIOD. joint for pipe lines a. casing, mpipetelescopic therein, :1. 'stuffing box joint thereheti veen including; agland, and cover for the v joint split and hinged l ongitiid in ally ofthe joint-and opensihle to expose the joint.

12. In an expasnsionijoi'ntforiipipe lines, n casing, re. pipetelescopic therein, s stint ing hox joint therehetween. including agland, s. guide on the cesing;, and a=cover carried by the guide, saidguide functioning i10 support:the pipewvhen the'eover is ren'ioved.

In an expansion joint for pipelines,

a casing, a. pipe telescopic therein, a head on the pipe, auguide'therefor, seichguide comv In. testimony whereof, I have hereunto signedmy name.

GEORGE ienunri-iY.

